Controller mechanism for turbines.



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hrm-826,000.

CONTROLLER MBCHANISM FOR TU BINES.

APPLICATION FILED NOV.23. 1905.

...N a s.. y MQQQQ :r1 N f y@ .....HHHHHUNNwMMHM.- Q- ou PATLNTLD JULY 17, 1906.`

Y No. l826,000.

4 SHEETS-SHEET 3.

' J. WILKINSON. l y CONTROLLER MECHANISM POR TURBINBS. l APPLICATION FILED NOV.23. 1905.

31 wznioz v Witnesses' PATENTED JULY-17', 1906.

f J. WILKINSON.' CONTROLLER MEOHANISMy FOR TURBINES@` APPLIOATION FILED 11017.23.. 1905.`

' 4 'sums-SHEET 4.

y efficiently as a part of the from a point of `travel of the contreler UNITEDA STATES JAMES WILKINSONa rAlnNr OFFICE;

OF PROVIDENCE, RHODE ISLAND, i ASSIGNOR TO WILKINSON TURBINE COMPANY, A CORPORATION OF ALABAMA.

` CONTROLLER MECHANISM Fon TunBiNEs.

Specification of Letters Patent.

Patented July 17, 1906.

Application led November 23, 1905. Serial No. 288.779.

To aV/ZZ whom, t may concern: Be it known that I,JAMEs WILKINSON, a citizenof the United States, residing at Providence,`1n the county of Providence and State. of Rhode Island, have invented new and use.

ful Improvements in Controller Mechanism for Turbines, of which the following is a speciiication.

My invention relates to improvements in fluid-pressure-controller mechanism for elastic-,Huid turbines.

In Letters Patents heretofore issued to me I have shown a jet-controller device diverting a freely-flowing stream of motor fluid to control the operation of fluid-actuated supply-valves for the turbine. The jet-stream after performing its controlling function Was discharged into the turbine without being under the control of the jetv .device or governor. For this reason a stream of small volume was used such, for'instance, as would operate the turbine under itsfriction load. In my present invention I propose to adapt the governor to controlthe' j et-stream like a part of the main supply. This is most simply done by ada ting the jet-controller device to act as a va ve inregulating or cutting off the iiow of the jet-stream into the turbine.I Inasmuch\as the jet action of the stream will be relied upon to control the main turbine-supply valve or valves, this jetstreain should not be valved in a manner to interfere with its valves. .I therefore cause the device to valve it ofi only after the other turbine-supply has been cutoff by the action of the jet on'the turbine-supply valve or valves.

\ I have illustrated my invention applied to an impact-turbine, in which case vthe main supply of motor fluid, as well as the jetstream, will be discharged into the turbine.

through nozzle assages. It is desirable esign and regulation (but` not essential) that the jet-stream should be substantially of equal volume with the supply-nozzle streams, and it Will'be evident that where provision is made whereby the speedresponsive device can control the jet-stream supply it may be of large power.-

In handling jets of large powerthe increased area of the j etforiice and ofthe port cooperating therewith tends to increase the Vitby enlarging or 'a direction at right angles to that of its cony controlling injector I be obtained by a governed move-v about an eighth of an inch. It is control of the supply? device requisite to give the desired in]ector and ejector effects. This is not desirable, and I propose to avoid spreading the jet-orifice in trolling movements. or. passage is similarly ture of my invention tance in ractice and, the use o an annular struction, for by its The cooperating port extended. Thisfea* isl of marked imporas developed, leads to use the jet device is balanced and compact, and a jet of large power canbe controlled in a small chamber with a minimum movement. Thus a j et-orifice oneeighth of` an inch wide controller device between two and three inches in diameter can mately ve-hundred-horse power, the ull and ejector eiiect .fof which may ment, of necessary to give the device a further travel to cause it `to-valve Voff the jet-stream from the turbine; but this will not be required under the usual operating conditions" and may be effected by increasing the travel of the device another eighth of an inch. According to the character of the governor-controlled means for operating the jet or controller device it may be ada ted to intermittently cut off the supply-nozz es for varying time intervals until they are held closed, when the de-v vice will commence to valve off l the jetstream from the nozzlefpassage, through which it enters the turbine, or the controller device ma. beso actuated ,as to cut ol the nozzle undy r its control when it cuts ofi the other su ply-nozzles, as by giving it a full quarter-inch stroke in the recedingillustration, thereby intermittent pulsating the whole supply under intermediate load conditions. Therapidity with which the controller device acts to cut off the supply-nozzles is a factbr-in determining the most desirable manner of lcontrollii"g^the jet-stream.

Where as in my Letters Patent No. 753,773 the valves controlling the supply-nozzles are adapted to operate successlvely as the jet device varies the controller-pressure, the oscillatory movement of the device may be dispensedfwith, ifdesired, and as it is shifted under the control of the governor itwill first openthe nozzle 'under' its control and then gradually vary the pressure ofthe controller jet as the preferred congive a jet of approXi' extending around a cutting oi or or the turbine iiuid to cause the other nozzles to open suc` cessively or, reversely, will successively close the supply-nozzles and then the nozzle under its control. When the device is oscillated under these conditions, it will effect a successive intermittent cut off of the several supply-valves- The construction of the controller mechanism also -deteri'nines the manner in which the jet-stream is cut off. This may he by a wire-drawing action of the jet-valve or by intermittently pulsating the stream in the manner described in my pending application, Serial No. 136,229,4

' vMy .present invention further coniprises improvements in the governor-controlled actuating mechanism for the jet device comprising a rotating actuatoriand an element positioned by a governor and operated by said actuator to move the jet device to produce the desired operation of the nozzle-4 valves. I have illustrated this in the preferred form dluring its active control of the supply-noa z es.

Referring to the drawings, which show an illustrative embodiment of my invention, Figure 1v shows the high-pressure end of a horizontal axial-How impact-turbine .with the adiacent shaft-bearing, the-head and bearing being broken away to illustrate the controller device and its actuating mechanism in side elevation. Fig. 2 is an enlarged detail view ofa portion of the supply-head, shown partly in section to illustrate the controller device, and a supply-valve in elevation. Fig. 3 is a vertical section along the line a; Qc, Fig. 2. Fig. 4 is a cross-sectional view along the line ly y, Fig. 3. Fig. 5 is a similar view along the line z z, Fig. 3. Fig. 6 is a detail view of the rotating actuator or controllerecam. Fie. 7 is a cross-sectional view through the mid`4 dle of the actuator'. Figs. 8, 9, and 10 are diagrammatic views, respectively, illustrating the positions of the operating devices of the jet-nozzle whenthe latter-is adjusted to operate with full injector action, full ejector action, and to valve off the jet-supply from the' turbine.` Y

Similar reference characters refer to similar l.

parts throughout the drawings. f

My invention is applicable to any type of turbine, but for purposes .of illustration is shown in connection with a horizontal impact-turbine having a supply-head 1, held in place in a shell 2 by a locking-ring The shell surrounds ythe inner sectional casing of Ithe turbine and forms a motor-fluid-supply chamber Ll, which is connected in any suitable manner with a source of {luid-pressure and with the several nozzle-passages disposed around head 2 vand adapted to dis-- charge against a bucket-wheel 5 in the turbine. Asshown in Fig. 2, grooves 6 in the head lead from chamber '4 and admit the motor duid to valve-chambers 7.v Valves 8 for oscillating the device only scacco control the admission of the iiuid to the bowlsl 9 of the main supply/*nozzles 10. Any desired number o nozzles 10 may be used, and they may be oi' any desired capacity or design. The valves S are shown as reciprocating prippetvalves operated by spring-loaded pistons 11, which o )crate in cylinders 12, exposed below to tlie supply pressure and above to a controller-fluid pressure in a con duit 13. The construction ol the valves and. motors,.however, forms no part of my present invention, it being only necessary that the valve-motors respond to changes in the controller-Huid pressure to open or close the. valves. The valveandniotor construction forms the Subjecifmatter of a pending application, Serial No. 287,363. The conduit 13, which is shown as formed between a ffrooved ring 1.4 and the head, is connected r:by pasd sages 15 with the valve-cylinders and by one or more. passages 16 with the Huid-pressure controller mechanism, which will now be described.

. The motor fluid in chamber 4 llows through a passage 17 into a chamber 18, preferably formed in the head. A shell 19, open at both ends, is inserted through an opening in the head and passes through chamber andrests upon a shoulder 20, surrounding the supplybowl 21 for a nozzle 22, 'leading through the head and discharging against wheel 5. A plate 23, held by a bonnet 2e, closes the uper end of the shell and the chamber in which '1t is disposed. i The shell is provided with one or more ports 25 opposite chamber 1S and with one or more ports 26, disposed nearer its inner end and opposite a recess, groove,`or chamber 27 in the supply-head, from which the lpassage or passages 16 lead to the controller-conduit. As' a preferred construction l. use two chambers 27, formed as crescent-shaped grooves in cross-section, which extend each nearly half around the shell 19 and into each of which a. plurality of ports 26 open. Passages 16 lead in opposite directions, one from each chamber 27, to con? duit 1.3. The chamber 27 may be formed as an annular groove. surrounding the shell, ifdesired, and may be connected in multiple ory series with the several valve-motors- The controller 'device is disposed within the shell 19 and comprises a cylindricall body portion 28, which at one end tapers inwardlyat 29, Fig. 3, and then flares outwardly at 30.

The body portion being cored out or hollow is the controller device. An end iece 33,

which tapers inwardly and then ares outf wardly in the same lmanner as the end of the portion 28, is connected to said body or to a stern 34, passing therethrough, and disposed so as to leave a narrow circular jetpri-y directly into fice 35 of the desired cross-sectional area between it and portion 3() of .the device 128, through which the fluid-pressure entering the latter through ports 25 and 32 escapes inthe form of an annular jet. To maintain .the edges of the jet properly spaced, I provide wedge-shaped lugs 36, preferably formed integral with the body portion of the controller device. These spacing-lugs have their points toward the outer edge of the jet, so that it flows in a substantially annular stream. Though I prefer to use an annular stream, oppositely-flowing jets in the shape of segments will give the desired effect and also balance the controller device. The thickness of the shell 19 is reduced opposite ports 26, so as to leave a narrow edge 37, from which the end of the shell tapers to the vshoulder 20 of the head. This thin division edge between the ported portion of the shell 'and the nozzle-bowl 21 requires only a short movement of the controller device to shift the jet from a point where it acts with full injector effect, Fig. 8, to raise the pressure in chambers27 to a point where it is deliected the nozzle and acts with an ejector effect, Fig. 9, to lower the pressure in chambers 27. The tapered formation of the jet portion of the controller device is provided to `permit a ready lescape for the jetstreain between it and the edge 37 of the shell into the nozzle 22.

The end piece 33 is provided with an annular valve-face 38, adapted to engage the edge 37 of the shell 19vas a seat and cut off the jetstream, which would otherwise flow through the shell, from the nozzle 22 when the controller device is moved to its extreme outer position, Fig. 10. i atively to the jet-orifice 35 that it does not commence its valving action` of the jetstream until the orifice has reached a position opposite the ports 26, where it exerts its full injector effect. As this will produce the highest controller-pressure requisite to insure the closing of all the supply-valves 8, it follows that the controller device first causes all the 'nozzles 10 to be cut out of service, after which it commences to throttle the sup ly to the jet-nozzle 22 for light loads and ally acts to cut the latter out of service and cut off all fluid-supply from the turbine,

Though the controller device may be operated byhand, I prefer to effect this mechanically under the control of a speed-responsive device, which may be a governor 39, driven in any suitable manner from the turbineshaft' and mounted on the shaft-bearing 40. The governor acts to rock 'a lever 41', fulcrurned at 42 and connected at a rod 43, which is swivelly connected to a bell-crank lever 44, journaled on a stud 45, carried by 'the turbine-head 1. A link 46 connects the lever 44 with the upper end of a bar 47, piv- 5 otally connected at an intermediate point to The valve is so disposed relthe block. The

a pivoted lever 48, the opposite ends of which are respectively pivoted to a fixed stud 49 and to a sleeve 50, which slides on a lever 51, also pivotally connected to the stud 49. The latter stud is shown mounted on the supporting-frame 52 for the bearing 40. The lower end of the governor-shifted bar 47 is' bifurcated and has a roller 53 journaled therein. This roller is adapted to engage a rotating actuator 54 in the form of a cani-cylinder mounted on a shaft 55, journaled in a bearing 56 in the bearing-frame 52 and carrying a gear 57, vmeshing with a gear 58 on a shaft 59, which may be a continuation of the shaft which drives the governor. The gear connections between the turbine-shaft and shaft will serve as speed-reducing means to give the actuator any desired speed or rotation. Any other suitable means may be used to give the actuator a slow rotation. The lever 51 has its free end bifurcated and rounded so as to straddle a shifting block 60, threaded onto the stem 34 and provided with collars between which the rounded ends of the Alever are disposed. A

stem 34 passes through a packin -gland 62 in the bonnet 24 and throug top plates 23 and 3l for the shell and controller device, respectively, a collar 63 on the stem engaging the top of plate 31 to hold the controller device against movement on the stem. The bonnet 24 carries an extension 64, which serves as 'an outer end bearing for the stem 34.

Since the levers 48 and 51 are connectedl by a sliding sleeve and are eccentrically piv-.

oted, it follows that any movement given lever 48 lwill act to shift the position of lever 51, stem 34, and the controller device. The desired controlling movements are given the lever 48 by the actuator 54, acting through the governor-shifted bar 47. To hold this bar against the actuator, I may use a spring,

jam-nut 61 is" provided fork IOO IOS

or, as shown, I may cause pressure of the Inotor fluid, acting against the stem 34 of the controller device, to move lever 51 out- IIO Wardly and through lever 48 press bar 47 against the actuator.v I provide one or more passages 65, which leadfrom Va point below the valve-seat 37 to the upper end of shell 19,

thereby balancing the controller device except as to the stern 34. I show two of these pressure-balancing passages 65 formed in the shell and arranged on opposite sides between the chambers 27. struction of the actuator may best be described in connection with the operation of the controller mechanism, and for this purpose reference will be made to Sheet 4 of thel drawings, wherein the actuator is shown in detail in Fig. 6. to different points in the periphery of the actuator correspond with the positions of the bar 47, as shown in the diagrammatic views. Before steam is admitted to the turbine the The details of coni arrow c indicates the position of the bar. The governor is set by moving it by hand to the position shown in.Fig. Q, when the bar 47 assumes the position of the arrow c, and steam is then admitted. As the turbine speeds up the governor swings the bar across toward the osi tion of arrow a.. As the bar is shifted to t e left from the position of arrow (L it is lifted to its highest position, (indicated by the point c.) This lifting movement of the bar acts to gradually move the valve-face i' away from its seat 37, so that lpressure is permitted to How through the controller device and nozzle 22 into the turbine. When the bar has reached-the position of the arrow c, it will have moved the controller-jet to the position shown in' Fig. 9, where it acts with full ejector effect and all of thenozzle-valves are open. Thisl full supply of motor iiuid will speed the governor up and cause the bar to swing toward the position of the arrow a. Ifthe load be now'placed on the turbine, the

Aresulting speed will swing the bar over the curved' surface' of the Ispiral-shouldered portion-'66 of the actuator. This shoulder has a straight ed e 67 struck on an arc from the point o. hen the bar is on the shouldered portion, it is lifted to the position ofthe arrow b, which is the position of the parts in Fig. 9 when all the valves are open. When.

the bar rides off the shoulder, it drops onto the curved surface 68 of the'actuator. and assumes the position of the arrow b', which shifts the bar tothe position o corresponding to Fig. S, when the nozzles, excepting 22, are closed. As the edge 69 of the shoulder is inwthe form of a spiral, it follows that the period during which the bar is in the .position of arrows b or b depends upon the point 4of engagement of the roller 53 with the shoulder 66. As the bar is swung back and forthy over this shouldered portion of the actuator it 'controls the nozzles 10 tointermittently cut them off for graudally increasing portions of the cycles of rotation of the actuator until and when the bar rides on the surface 70A the nozzles are held closed. Should the load become excessive, thereby lowering the speed too far, or should the speed be too high, due to racing or 'other cause, lthe bar-47 will be shifted to the position a, or a', where, it will be noted, it adjusts the controller device to the position o and cuts off all supply 'from the turbine, as in the overspeed position; (Shown in Fig. 10.)

The operation just described provides for annintermittent cut-off of the nozzles-10 during intermediate load conditions and for throttling the action of the valve 38 in opening and closing the nozzle 22. If it is desired, the whole supply to the turbine may be intermittently cut off by reducing the `diameter of the surface 67 tothe point indicated by the dotted line 71, Fig. 6. This .leaves the shouldered portion 66 of the same are closed.

size and causes the bar 47 asit rides off the shoulder to drop to the position of the arrow d. It will be noted that this corresponds to the position o, which is that of the controller device in FigylU-or when all nozzles A cam of this construction will cause the device to move from the position in Fig. 9 tothe position in Fig. 10 during 'each rotation cf theV controller device, so long as ,the governor lholds the bar opposite the shoulder 66. Though I prefer to utilize this intermittent cut-off of the supply, it will be evident that a gradually-tapering actuator may be employed, which would cause the controller device to move gradually under load changes from the position in Fig. 9 to that in Fig. 10, and vice versa, and in this connection the several nozzle-valves could be adapted to operate successively or res ond in any de sired manner to the gradual y rising and falling pressure in the conduit 13.

I have thus described in detail anillustrative embodiment of my invention and in its preferred form for my uses; but as it is obviously capable of modification for other types of impact and reaction turbines thatwhich -is hereinafter claimed as new is not to freely-flowing fluid-supply for one nozzle to control the operation of the valves for the other nozzles. i

2. In a turbine having a plurality of nozzle-passages through which streams of substantially equal volume enter the turbine, valves to cut olf said streams, and means utilizing one of said streams to cut off the other streams before its controlling-valve takes effect u on it.

3. n a turbine havin a plurality of supply-nozzles of substantia ly equal ca acity, a ,controller-chamber through which motor fluid flows to one of said nozzles, means to ldif-l vert the stream of motor fluidas-it flows through said chamber, means, movable responsive to the diversion of said stream, which cut offsaid other nozzles, and means to cut off said stream from the turbine.

l'lO

, 4. A controller mechanism for a turbinel -said chamber movable responsive to speed conditions and adapted to divert thestrearn of fluid entering said chamber and tovalve it ed from said motor, and one or more supply-valves' whose operation'is controlled by said device. l

6. In a-turbine, a nozzle therefor, a sup- 5. ply-chamber from -which said nozzle leads, a

.device which discharges duid-pressure into said chamber in the form of a jet and which sion of motor fluid through other nozzles.

7. In a controller 'mechanism for a fluid-v motor, a stream of iiuid utilized to drive the motor, valve means to cut off said stream, one or more supply-valves ifor the motor, means to divert said stream to control said supply valve or valves, and speed-responsive means which control the diversion and cutting H of said stream. E

8. In combination with a fluid-motor having one or more iiuidressure-controlled sup- .ply-valves,` a control er mechanism for said Valves utilizing a substantially annular et to ifiegilate the pressure of the valve-controlling 9. In a motor, one or more fluid-pressurel controlled '.valves, a controller device for discharging a .jet offfluid in annular form, and 3o means coperating with said jet for controlling the operation of said valve or valves.

" 10. In a valve.- controlling mechanism,

[means under the controlofa speed-responsive device to produce a substantiallyennwlar movable -jet of fluid-pressure, one or more f ports or assa es, the pressure in which is controlled). by the relative position of said jet, l and valve means 'controlled by the pressure 1in said ort or orts.;

' a va ve-controlling mechanism,Il a I jet device through which a substantially annular jet of' fluid flows, a substantially annular controller-chamber Withrespect to which said jet is adapted to act with injector or ejector effect, valves havin nectedwith said chamber, andg means to vary the pressure in said chamber by moving said jet to control the operation of said valves.

12. In a controller mechanism fora fluidmotor having a plurality-of supply-streams of fluid, an adjustable jet-controller device throu h which one of said streams flows and is disc arged laterally in a thinflaring jet or jets, a speed-responslve device for operating said et device, one or more passages having a 4flaring inlet end or ends in which said jet or jets act with injector and ejectoreffect, and controller means for the other'streams which .operate responsive said passage or assages. 13. In a flui -pressure-controller mechanism forv motor-supply valves, a hollow shell having a port'for the admission offluid-pressure anda side orifice forits lateral dischar e, v6.5i a chamber :into Whichsaid side orifice is- .ism for motor-supply motors conto the fluid-pressure in charges, a passage for receiving the impact effect of said lateral discharge, one or more supply-valves which operate responsive to the pressure in said passage, and an exhaustport for said chamber adapted to be closed y said device.

14. In a fluid-pressure-controller mechanvalves, means movable with one of said valves which utilizesthe freely-'owin'g fluid-supply to said .valve to j create a variable controller-pressure for said other valves, said means being adapted to effect, by said controller-pressure and devices responsive thereto, the closure of the other valves before the valve movable with it closes.` 15. In an elastic-fluid turbine, a nozzlepassa e, a shell seated above said nozzle and provided with one or more ports leading to a controller-fluid passage, and ports for the admission and discharge of fluid into said nozzle, in-combination with a device through which the fluid-pressure, admitted to said shell, fiows and is discharged as a jet with injector or ejector effect in the port or ports leading to said controller-fluid passage, .said device moving responsive to speed changes and being adapted to cut ofi said jet fluid from said nozzle, and devioescontrolled by the pressure in said controller-fluid passa;r for varying the volume of iiuid admitted to the turbine; j

w 16. In an elastic-Huid turbine, a nozzlepassage, a chamber supplied at one end with motor-fluid pressure and communicating with said nozzle, a controller device in said chamber through which thepressure iiows to said nozzle, said device having lateral intermediate discharge-openings for' the iiuid, al

valve at its end which cuts off the fluid flowing through said discharge-openings .from- 4said nozzle, and a controller-Huid passage Whose pressure is variedby the impact action of the fiowingstrearnjand which acts to open and close other nozzle-valves. v

17. In a turbine, a controller device formed with a hollow body portion, a jet nozzle vor nozzles communicating therewith and set in yond said jet-nozzle, in combination with a passage to supply fluid-pressure to said device, a passage controlled by -said valve-face and through which the said Huid flows from the jet-nozzle into the turbine, and fluid-operated means which open and close supplyvalves responsive to the movements of' the fluid-jet, substantially as described.

18. In a turbine, a jet-controller device through which motor iiuid flows into the turbine, a valve movable with said device for cutting ofl'` said iiuid from the turbine, a stem for operating said device, and means to equalize the pressures acting on said device to substantially balance it, except as to the area of said stem, substantially as described.

IOO

IIO

y from the side of the device, a valve-face beat its lower end and one or more ports at an intermediate point for the admission ot motor iluid, a controller device having ports registering with the intermediate ports in said casing whereby motor lluid enters said device, means for discharging the iluid from said device in thef'orni of' al jet, a controllerfluid passage cooperating with said jet and lea-ding to valve-controlling means, a valve carried by said device and disposed below said jet, said valve being adapted to engage. a seat above said bowl, one or more passages to equalize the pressures at opposite ends of the casing between which said controller device acts, and speed-responsive devices to operate said device.

20. In a controllei' mechanism for motorvalves, a controller device for the valve-controlling luid, an operating mechanism for said device comprising a lever pivotally connected to a swinging arm, a governor-actuated arm, a swivel-link connecting said latter arm and one end of said lever, a rotating actuator for enga-ging the other end of saidlever and oscillating it without 'eilexct upon said governor-actuated arm, and means for operating said device adjusted by the tree end of the arm to which said lever is pivotally connected.

21. A controller mechanism for an elasticiuid turbine comprisinga speed-responsive device, one or more fluid-pressiire-controlled supply-valves, a controller device for the valve-controlling fluid-pressure, a pivoted arm for operating said device, a pivoted levei having a sliding connection with said arm, an actuator for intermittently moving said lever and arm, and connections between said speed-responsive device and lever to control the extent of its movement by engagement with said actuator.'

22. In a ,controller mechanism for turbines, a speed-responsive device, a cam, a lever moved by said device over said cam, an

-arm shifted by said lever, a device for controlling the operation of a sup ly valve or valves -for the turbine, and a sli ing member movable with said device to which said arm is swivelly connected, as and for the purposes by the latter moves responsive to changes in 6 5 position ot said lever.

24. In an elastic-fluid turbine, a pluralityl olz fluid-controlled valves, a controller device utilizing Huid-pressure t-o eli'ect the operation ol' said valve's, a valve movable with said 7o controller device for cutting ol" the controller fluid from the turbine, an operating mechanism for said device comprising a speed-responsive device, a iotatiiig actuator provided with a shouldered portion, operating connections for said controller device which are shifted by said speed-responsive device, said connections being adapted to engage said actuator and to be moved thereby to hold all the turbine-supply .valvesSo open, to intermittently close the {luid-pressure-controlled valves, and to close said valve for; the controller fluid after the other valves have been'closed thereby.

25. In a controller mechanism for a turbine, a fluid-controlled supply-vzfilve, a-con-. tioller device operating' on the valve-controlling fluid, a governor, a rotating actuator, and devices shifted by said governor and actuator which move said controller device, as 9o and for the purposes described.

26. Ina controller mechanism for valves, the combination of a rotating actuator, an element operated by said actuator and :id-

justable relatively thereto, a controller-nozzle operatively connected to said clement,

and a valve controlled by {luid-pressure flowing through said nozzle.

27. In combination, a rotating cani-actuator, a governor-shifted element engaged and roo moved thereby, 'a controller-nozzle,v and means te transmit the movements imparted to said element by said actuator to said nozzle,'substaiitially as described.

2S. The combination, in a valve-controller 105 mechanism, of a cam, an actuator-bar engaged and oscillated by said cam, governor means to shift said bar relatively to said cam, a controller-nozzle, and means to-.transmit the oscillatory movements of said bar to said i ionozzle, for the purposes described.

29. The combination, in a valve-controller meehanism for turbines, of a cam, an actuator-bar resting thereon and oscillated thereby, governor means to adjust said bar and cam relatively, one or more nozzles andvalves, and fluid-pressure-controller devices l for said valves connected to and moved bv said bar.

'1' 30. The combination, in a valve-controller 12ov mechanism Jfor turbines, of a rotatable actu- *n ator, an eleinentprovided with an antifriction-wheel which rides onv an actuator, governor means to move the wheel relatively to said actuator, one or more nozzles and. 1:25

valves, and fluid-pressure-controller devices for saidvalve o erated by said element.

31. The com ination, inta valve-confroller mechanism for turbines, of a rotatable' cam, In testimony whereof I have hereunto set an actuator-bar supported bysaid cam, 'conmy hand in `tact means between said bar and cam, govnesses. ernor means to adjust said cam and bar rela. 5 tively, one or more nozzles and valves, and Witnesses: lluid-pressure-controller .devices for said JAMES H.l NOLAN,

valves operated by said bar. 1 THOMAS H. SHEPARD.

' JAMES WiLKiNsoN.

presence of tWo subscribing witdv 

